Sign the 16K boot image OTA

Sign the 16K OTA package so that it can be installed by device.

Test: th
Bug: 293313353
Change-Id: I2f1f6f5430fc920d5edeeab3f3335cbdf76fdefd
diff --git a/core/Makefile b/core/Makefile
index f6b0401..8214c77 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1107,8 +1107,12 @@
 .PHONY: bootimage_16k
 
 BUILT_BOOT_OTA_PACKAGE_16K := $(PRODUCT_OUT)/boot_ota_16k.zip
-$(BUILT_BOOT_OTA_PACKAGE_16K): $(OTA_FROM_RAW_IMG) $(BUILT_BOOTIMAGE_16K_TARGET)
-	$(OTA_FROM_RAW_IMG) --path $(HOST_OUT) --partition_name boot --output $@ $(BUILT_BOOTIMAGE_16K_TARGET)
+$(BUILT_BOOT_OTA_PACKAGE_16K): $(OTA_FROM_RAW_IMG) $(BUILT_BOOTIMAGE_16K_TARGET) $(DEFAULT_SYSTEM_DEV_CERTIFICATE).pk8
+	$(OTA_FROM_RAW_IMG) --package_key $(DEFAULT_SYSTEM_DEV_CERTIFICATE) \
+                      --path $(HOST_OUT) \
+                      --partition_name boot \
+                      --output $@ \
+                      $(BUILT_BOOTIMAGE_16K_TARGET)
 
 boototapackage_16k: $(BUILT_BOOT_OTA_PACKAGE_16K)
 .PHONY: boototapackage_16k